6. Sidewalk Location for Lake Susan Hills West, Citywide Sidewalk Policy C I TY OF
1
CHANHASSEN
4 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
1
(612) 937-1900
MEMORANDUM
TO: Gary Warren, City Engineer
FROM: Allan Larson, Sr. Engineering Technician L1
DATE: June 29 , 1989
' SUBJ: Confirmation of Sidewalk Location and Consider City-Wide
Sidewalk Policy
Lake Susan Hills West, Phases I and II
File Nos . 87-32 and 88-8
Staff has visited the referenced site and reviewed prospective
locations for placement of sidewalk along Lake Susan Hills Drive.
' Detail measurements were taken of existing fixtures such as
street lights, hydrants , etc . From these measurements it has
been determined that the sidewalk would best be placed along the
' north side of Lake Susan Hills Drive in both phases. This is
consistent with the alignment which was approved as a part of the
platting process . This location also makes sense since it puts
' the trail on the same side as the parkland that is to be
developed as a part of Phase III of Lake Susan Hills West.
The sidewalk will be placed against the right-of-way line in
' Phase I (east of County Road 17 ) and one ( 1) foot off the right-
of-way line in Phase II (west of County Road 17 ) as shown in
Attachments 1 and 2. This will allow us to miss as many existing
utilities, i .e. street lights, gate valves, telephone pedestals,
hydrants , as possible. The sidewalk width has been reduced to
five feet and is concrete in recognition of this being a residen-
tial trail .
Attachments
1. Sidewalk location map, Lake Susan Hills West, Phase I.
2 . Sidewalk location map, Lake Susan Hills West, Phase II.
3 . Right-of-way cross section.
c: Bob Kopp, Argus Development
Gary Warren
June 29 , 1989
Page 2
City Engineer ' s Comments :
The City and staff has been laboring under the handicap of not I
having an adopted trailway/sidewalk policy. It is even difficult
for us to keep track of the difference between a trail and a
sidewalk as the terms have been used interchangeably by all par-
ties . This office would strongly recommend adoption of a
sidewalk/trail (there I go again) policy to address issues such
as construction type, width , maintenance responsibility, snow
removal , liability, etc . As a practical matter, it will be a
policy of this office to require all plans and specifications for
subdivision improvements, where sidewalks/trails are required, to
include these as part of the construction documents and require
that they be built at the time of construction of the subdivision
improvements . This will help tremendously to eliminate conflicts
with other utilities such as NSP, MVE, cable TV, Minnegasco, and
telephone, as well as resident complaints that they were unaware
that a walkway was planned for their front yard. In 'addition,
the City Council should strongly consider adopting a 60-foot
right-of-way for all new roadways since it is virtually
impossible, or difficult at least, to construct walkways within
boulevard areas of a 50-foot right-of-way which is otir current
urban area standard.
Manager' s Comments: I totally agree with the City Engineer' s
recommendation. Platting standards from the turn of the century
have been 66 feet. It has only been in the past 10 to 15 years
that these standards have continued to erode to 60 feet and then
to 50 feet.
As Gary noted, with 50 feet you simply do not have enough room
for all of the underground utilities. Too often sidewalk loca-
tions are forced into becoming attached to the street or left
with 1 to 2 ft. separations (Laredo, West 79th Street, etc. ) .
This type of design defeats the protective features originally
strived for in a separated street/walking concept - not to men-
tion the inability to maintain 2 ft. of sod or clear streets/
store snow in the winter.
A motion to modify our street right-of-way police to require 66
feet is recommended.
1
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LAKE SUSAN HILLS PLR. FILE NO. __. . -
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ATTACHMENT- 1
IPLAT FILE NO. __ '
C.R. DOC. NO. _ _
LAKE SUSAN HILLS WEST
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I., ATTACHMENT-2
— I — N — — N . N — a-
PREFERRED
SIDEWALK LOCATION
PROPERTY
LINE
HYDRANT
I/2"SLOPE PER FT.
TOWARD
I/4" SLOPE PER FT TO ROADWAY ROADWAY VALVE BOX
01 - _ 3.0` I.0`
(' f �
VARIES
(o- 4 i)
De:-Pros O t..1
W1O11't SO VS ��' NOTE : TYPICAL 4.0" THICKNESS,
AT DRIVEWAY CROSSINGS
N1m AD G0" RESIDENTIAL
7.5" COMMERCIAL
.k.C. lit VS 3S
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CITY of 7 TYPICAL
CHANHA:S= SIDEWALK
SCALE 1'- DATE 5 - 89 PLATE NO. 5 214